Obtained by chlorination of butyl rubber in hexane solution .

由丁基橡胶在己烷溶液中氯化制得。

There is also a need to reduce possible contributions from other sources , such as propyl - , butyl - and isobutyl paraben in cosmetics , and phthalates in footwear ( such as light-weight sandals and rubber boots ) .

此外，还需要尽量减少接触其他有害因素，比如化妆品中的丙烷基-、丁基-和异丁基-对羟苯甲酸酯；鞋类中的邻苯二甲酸酯（像轻便凉鞋和橡胶靴）。

Butyl paraben ( and ) sorbic acid .

羟基苯甲酸丁酯、山梨酸。

Hill butyl aims to become a world-class first-class fabric suppliers .

希尔丁目标是成为世界级一流面料供应商。

Ethyl tert butyl ether is synthesized from ethanol and tert butyl alcohol by reaction distillation .

以乙醇和叔丁醇为反应物，采用反应精馏法合成了乙基叔丁基醚。